Selling my Dads 1987 Avanti He purchased this car August 12, 991 with 16,527 and has only put 7,500 miles on it in the past 24 years! The only flaws are with the paint and after talking to other Avanti owners this was common with the Kelly built cars. The horn is currently not working. This is a great driving car and is built on the GM G body platform with a 305 and overdrive trans. In the photo of the steering wheel you can see where the original owner did a poor job engraving their name on the wheel to match Michael Kellys signature. (recently had drivers power window rebuilt)To answer a few questions: Avantis with GM frames don't have hog troughs, nbsp;Both windows and sunroof work, nbsp;A/C worksenjoyed driving to Amboy depot days last week 200 miles in style!